Adaptec ASR-81605ZQ PCIe x8 RAID Controller Card

Adaptec ASR-81605ZQ is a Series 8 SAS/SATA RAID controller card that plugs into a PCIe 3.0 x8 bus and exposes 16 SAS ports through four internal SFF-8643 connectors, delivering 12Gbps per port to high-density storage arrays. The card includes 1 GB of onboard cache and a battery backup unit to preserve cached writes during power loss, enabling safer data protection in enterprise deployments. It supports RAID levels 0, 1, 1E, 5, 6, 10, 50, and 60, with features such as online capacity expansion and hot spares, and is compatible with Adaptec maxCache caching software for Series 8 hardware. The ASR-81605ZQ uses a low-profile MD2 form factor for flexible server integration, making it suitable for compact 1U or small-form-factor systems that require dense, reliable SAS storage expansion.